Heating apparatus



May 13, 1930. .1.. PRIMRosE A HEATING APPARATUS- Filed Jan. 9, 1925 2Sheets-Sheet 1 fuma/1ML ommswk t May 13, 1930. J. PRIMRosE HEATINGAPPARATUS Filed Jan. 9, 1925 2 Sheets-Sheet 2 Patented May 13, 1930UNITED STATES `PArl-:N'r OFFICE JOHN PRIMROSE, OF DONGAN HILLS, NEWYORI/K, .ASSIGNOR TO FOSTER WHEELER CORPORATION, OF NEW YORK, N. Y., A.CORPORATION OF NEW YORK HEATING APPARATUS Application mea January 9,1925. serial N. 1,347.

The present invention is directed to heating apparatus and moreparticularly to an arrangement of heating tubes in whiclnthe combinedeffects of heat of convection and heat of radiation are utilized to heatthe tubes and their contents. In the present construction certain tubesare provided which are arranged in a chamber and so disposed thereinthat they receive heat mainly by radiation. The present invention has.for its object the provision of means for supporting these tubes so thatsagging of the tubes will be prevented while permitting expansion of theapparatus as a whole. Other and more detailed objects of the presentinvention will hereinafter appear in the accompanying specification andclaims and will be illustrated in the drawings which by way ofillustration portray an embodiment of my invention. y

In the drawings,

Fig.- 1 illustrates a sectional view of the heating apparatus embodyingmy improvements.

Fig. 2 is a detail sectional view of the same taken on line 2 2 of Fig.1.

Fig. 3 is a fragmentary sectional detail of one of the heatabsorbingunits, the section being taken on line 3-3 of Fig. 1.

Fig. 4 is a detail view of the hanger structure for the tube supportingplates.

Fig. 5 is a detail view of a modified form of combustion chamber.

Referring to the drawings, the heater 1ncludes two 'chambers designated10 and 11 respectively. These chambers are formed of suitable brick-work12 and at one side of chamber 10 there is provided a fuel burner 13. Theflame from this burner passes across the bottom of the chamber 10 as isindicated by the arrows 14, and eventually the products of combustionemerge from chamber 10 through duct 15 into chamber 11. The arvplication I do not specically claim the structure shown in Fig. 5 as thesame does not form a part of my present invention.

Heat absorbing devices Suitably disposed in chamber 11 are a pluralltyof tubes 17. As shown in Fig. 1 these tubes are disposed in a pluralityof rows both horizontally and vertically. These tubes, if deslred, maybe provided with the usual and now well known corrugated heat absorbingelements 18. The various tubes 17 are interconnected by headers asindicated at 19 in Fig. 3 of the drawings. The medium to be heatedpreferably enters at an inlet header 20, passes downwardly through thetubes 17 finally emerging at outlet header 21. From this outlet header21 a pipe 22 leads to an inlet header 23. From inlet header 23 themedium to be heated successively passes through tubes 24 which aredisposed in the radiant heat chamber 10 adjacent the top` thereof so asto be out of the path of the hot gases. Tubes 24 also are preferablyconnected by the headers shown in dotted lines at 25 inFig. y1 and alsoin Fig. 2. These headers preferably but not necessarily are so arrangedthat the medium to be heated which may be oil passes serially throughthe tubes 24 `finally emerging at outlet header 26 (see Fi 2 Irnasimuchas tubes 24 and the radiant heat chamber 10 become very highly heated itis desirable that proper means be provided for supporting the tubes '24so that expansion of these tubes will not disarrange them or cause thejoints to be put under strain due to eX- cessive heat. For supportingthese tubes 24 .tured to receive the tubes 24. In order to support theplates channel-like cross beams 28 and 29 are provided supported in anysuitable manner upon the setting 12. These beams receive channel-likecross beams 30. For each plate 27 a pair of these channel-like beams 30are provided disposed back to back as shown and slightly spaced topermit a hanger bolt 31 to extend downwardly between them. The lower endof each hanger bolt is connected in any desirable way'as by a fork andpin connection 32 to the plate 27.

Over and supportedA by the upper row of tubes 24 I provide tile members33. These tile members rest upon the tops Iof the upper rows of tubesbeing arcuately notched for this purpose as shown in Fig, 1. Over thetile 33 there is preferably provided a layer of insulating material 34and this'layer may be covered by a superimposed layer of brlckwork 35.This brick-work extends under the beams 30.

By means of the construction shown comparatively free expansion ispermltted for the tubes 24 inasmuch as all parts are suspended from thebeams 30 whieh 'extend across the top of the setting 12.

0n account ofthe highly intense radiant heat it is preferable that someprotection be afforded for the lower edges of the plates 27 which -aresubject to the most intense radiant heat. For this purpose I preferablylocate the end plates 2 7 over the setting 12J and provide anintermediate brick-work pier 12a which extends upwardly under the edgeof the intermediate plate 27 as shown in Fig. 2.

. What I claim is: p E

1. A heating apparatus comprising a radiant heat chamber, disposedsubstantially without the path of rapid iiow of hot gases,

a plurality of tubes therein in various superimposed horizontal rows,common, platelike members for supporting all of said tubes, means forsupporting said members from above said chamber topermit expansion ofthe tube assembly, and means for protecting the lower edges of saidmembers from the y effect of high intense radiant heat.

2. A heating apparatus comprising in combination, a setting having aradiant heat chamber therein, said chamber being disposed substantiallywithout the path of rapid flow of hot gases, a plurality of tubestransversely disposed therein, a support for said tubes comprisingplates apertured to receive the various tubes which are disposed side byside, and means for supporting said members from th said settingcomprising transverse beam members and hanger supports dependingtherefrom and connected with said plates.

3. A heating apparatus comprising a setting having a radiant heatchamber therein, a plurality of tubes transversely disposed in saidchamber, and disposed out of the path of rapid flow of the hot gases ofcombustion, a plurality of tile members supported upon the upper row oftubes and formlng the roof of said radiant heat chamber, and means forsupporting said tubes and tile members from the side walls of saidsetting, said means comprising plates apertured to receive allof thetubes in said chamber and supporting tubes in each horizontal row, andsupporting connections from said members to said beams for the purposedescribed.

5. A heating apparatus comprising a heating chamber which issubstantially out of the path of rapid flow of hot gases having aplurality of tubes disposed in a plurality of superimposed rows and alsowith a plurality of said tubes side by side in a horizontal row,

said heating dhamber having side walls and cross beams supported therebyand means depending from said cross beams for supporting the said tubes,each of said tube support- .ing means havingmeans for conjointlysupporting a plurality of different tubes disposed horizontally side byside ina horizontal row in said chamber.' v

6. A heating apparatus comprising a setting having a heat chambertherein, beams extending across the top of said setting,

-plates suspended from said beams forming parts of side Walls of saidsetting, said plates being apertured with a plurality of horizontal rowsof apertures and a plurality of horizontal rows of tubes extendingWithin said chamber and passing through said apertures and supported bysaid plates.

7. A heating apparatus comprising a setting having a heat chambertherein, beamsV extending` across the top of. said setting, hangers'carried by said beams, plates suspended from said hangers forming partsof side walls of said setting, said plates being apertured with aplurality of horlzontal rows` of apertures, a plurality of horizontalrows of tubes extending within said chamber and passing through saidapertures and supported by said plates and connections between saidtubes outside said plates.

8. A heating apparatus comprising a setting having a heat chambertherein, beams extending across the to of said setting, hangers carriedby said eams, plates suspended from said hangers forming parts of sidewalls of said setting, said setting pro teoting the lower edges of saidplates, said plates beingapertured with a plurality of horizontal rowsof apertures, a plurality of horizontal rows of tubes extending withinsaid chamber and passing through said apertures and supported by saidplates and connections between said tubes outside said. plates. l

In testimony whereoflhereto aix my signature.

JOHN PRIMROSE.

